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Finding the Fourth Proportional to 253,013.37, 379,391.04 and 84,473.12

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Solution

The fourth proportional to 253,013.37, 379,391.04 and 84,473.12 is: 126,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,013.37 : 379,391.04 = 84,473.12 : x
  2. Step 2: Convert to fraction form
    253,013.37/379,391.04 = 84,473.12/x
  3. Step 3: Cross multiply
    253,013.37x = 379,391.04 × 84,473.12
  4. Step 4: Simplify right side
    253,013.37x = 32,048,342,951.89
  5. Step 5: Solve for x
    x = 32,048,342,951.89/253,013.37
  6. Step 6: Final answer
    x = 126,666.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.